The answer to 'best boiler' is that the best boiler for your home depends on several factors, including the size of your home, your heating needs, and your budget. In general, high-efficiency condensing boilers are considered among the best options for most homes. These boilers are designed to extract more heat from the combustion process, resulting in higher energy efficiency and lower heating costs.
Condensing boilers come in a variety of fuel types, including natural gas, propane, and oil. They are also available in different sizes to accommodate homes of different sizes. When choosing a boiler, it's important to work with a qualified HVAC professional who can assess your specific needs and recommend the best option for your home.